drop python 3.5

Author: tomato42

.github/workflows/ci.yml

@@ -47,10 +47,6 @@ jobs:
             os: ubuntu-20.04
             python-version: 2.7
             tox-env: gmpy2py27
-          - name: py3.5
-            os: ubuntu-20.04
-            python-version: 3.5
-            tox-env: py35
           - name: py3.6
             os: ubuntu-20.04
             python-version: 3.6

README.md

@@ -45,7 +45,7 @@ curves over prime fields.
 ## Dependencies
 
 This library uses only Python and the 'six' package. It is compatible with
-Python 2.6, 2.7, and 3.5+. It also supports execution on alternative
+Python 2.6, 2.7, and 3.6+. It also supports execution on alternative
 implementations like pypy and pypy3.
 
 If `gmpy2` or `gmpy` is installed, they will be used for faster arithmetic.

setup.py

@@ -27,14 +27,14 @@
     package_dir={"": "src"},
     license="MIT",
     cmdclass=commands,
-    python_requires=">=2.6, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*",
+    python_requires=">=2.6, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, "
+    "!=3.5.*",
     classifiers=[
         "Programming Language :: Python",
         "Programming Language :: Python :: 2",
         "Programming Language :: Python :: 2.6",
         "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",